"Explanationes ... quae in hoc tomo continentur, elaboratae ... fuerunt ab illmo. D.D. Francisco Antonio Lorenzana ... cui etiam suam operam adjunxit ... Franciscus Fabian et Fuero."
Mass (incl. rubrics) with proper of St. James the Greater, followed by Lorenzano's commentary; and major selections (Horae minores and Commune Sanctorum) from the Mozarabic breviary
Plates engraved in Puebla by J. Nava
Music limited to sample (p. 69-72, 2d group) in neumic and plainsong notation
Boston Public Library (Rare Books Department) copy bound in early sheepskin panelled in a border of gilt, floral tools. The spine is ruled and stamped in gilt, with no label present. All text block edges are gilt. Present on both covers is an unidentified heraldic/ecclesiastical stamp
No copyright page found. No table-of-contents pages found.